try wetsanding with swome 1500 - 2000 sandpaper... go in circles... use ALOT OF WATER... maybe a sponge to help keep it from being too abrasive.. u can also add some liquid soap to keep it from clogging the sandpaper... every so often dry off what you are wetsanding with a towel or any kind of drying utencil to see how far you've sanded down... painter of 12 years